文献类型： 外文期刊

作者： Weng, BQ ¹ ; Huang, DF ¹ ; Xiong, DZ ¹ ; Ying, ZY ¹ ; Huang, YB ¹ ; Lu, T ¹ ;

作者机构： 1.Fujian Acad Agr Sci, Res Ctr Ecol Agr, Fuzhou 350013, Peoples R China

关键词： selenium;Chamaecrista rotundifolia;growth;enzyme's activity;cell's ultra-microstructure

期刊名称：Land and Water Management: Decision Tools and Practices, Vols 1 and 2

ISSN：

年卷期： 2004 年

页码：

收录情况： SCI

摘要： Pot experiment was conducted to test the effects of using selenium fertilizer to Chamaecrista rotundifolia on the growth of plant, Nitrate Reductase Activity of leaf Nitrogen-fixing Ferment Activity of root nodule and ultra-microstructure of blade cell in this paper. Results showed that: by using selenium fertilizer (0.5-2mgSe/kg (.) soil), the increasing ranges of height, branches and plant's dry weight were 11.71% - 18.97%, 0.55% - 22.61% and 52.9% - 144.9%, respectively. The content of selenium in plant was enhanced obviously by the increasing concentration of selenium fertilizer applied. For example, the selenium's content in Plant of using none selenium (CK) was 0.025mg/kg only, and that of using 2mgSe/kg (.) soil was 0.222 mg/kg, the increasing times was 7.88 compared with that of using none selenium. The leaf's Nitrate Reductase Activity of using 1 mgSe/kg (.) soil reached the highest value, and the increasing rates were 281.5 per cent or 206.1 per cent compared with those of using none selenium or using 2mgSe/kg (.) soil, respectively. The root nodule's Nitrogen-fixing Ferment Activity of using 2mgSe/kg - soil got the best result, the increasing rate was 49.41 per cent compared with that of using none selenium. Using selenium could increase the number of chlorophyll, and treatment of 1.5mgSe/kg (.) soil got the best result; promote the formation of granum, and treatment of 1.5mgSe/kg (.) soil and 2mgSe/kg (.) soil got better result; but have nothing to do with the stability of two-layer-membrane of chlorophyll; cut down the number of mitochondria and density of cristae, and treatment of 1.5mgSe/kg (.) soil and 1 mgSe/kg (.) soil got better result; enhance the stability of cell wall and cell membrane, reduce the deposit of polymers like bags formed by primary wall and cell membrane.